The British Pound and London markets have rallied, as opinion polls suggest that the campaign in favour of Britain remaining in the European Union is edging ahead. However, the critical vote set this Thursday has been overshadowed by the death of opposition member of Parliament Jo Cox last week.

In the British Parliament here it has been a day of sometimes tearful tributes to the 41 year-old murdered politician, shot and stabbed to death in her constituency.  

A day of politics like no other, as the UK's members of Parliament, each wearing a single white rose, joined together as one in a special sitting to emphasise a national grief that spanned the political spectrum.

Parliament pays tribute to Jo Cox

"Jo's politics were inspired by love, and the outpouring and unity of the tributes we've seen in the past few days show the extraordinary reach and impact of her message," said Cameron.

"She was caring, eloquent, principled and wise," said John Bercow, speaker of UK House of Commons.

"We have lost one of our own, and our society as a whole has lost one of our very best," said Jeremy Corbyn, Labour Party leader.

At the end of this special session in honor of Jo Cox, and as the Mace, symbol of Parliament, was carried out of Chamber, the place echoed to the sound of applause unprecedented here.

A few miles away though, the man accused of the crime at the Old Bailey Central Criminal court was again remanded in custody. Thomas Mair, a 52 year-old. Such is the shock here at the murder of Jo Cox, a supporter of the European Union, that it's thought in some quarters to have impacted attitudes to Britain's Brexit referendum.

Opinion polls - although still close - have seen a rise in support for those campaigning to remain in the EU. That in turn has had a calming effect on the markets and given a boost to the Pound.